21410271236 has 24 divisors (see below), whose sum is σ = 38064188736. Its totient is φ = 10535332640.

The previous prime is 21410271221. The next prime is 21410271247. The reversal of 21410271236 is 63217201412.

It is a junction number, because it is equal to n+sod(n) for n = 21410271199 and 21410271208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90515 + ... + 225861.

It is an arithmetic number, because the mean of its divisors is an integer number (1586007864).

Almost surely, 2^21410271236 is an apocalyptic number.

It is an amenable number.

21410271236 is a deficient number, since it is larger than the sum of its proper divisors (16653917500).

21410271236 is a wasteful number, since it uses less digits than its factorization.

21410271236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135979 (or 135977 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 21410271236 its reverse (63217201412), we get a palindrome (84627472648).

The spelling of 21410271236 in words is "twenty-one billion, four hundred ten million, two hundred seventy-one thousand, two hundred thirty-six".